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56 lines
1.8 KiB
56 lines
1.8 KiB
// |
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// Copyright (C) 2009 The Android Open Source Project |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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#ifndef UPDATE_ENGINE_PAYLOAD_GENERATOR_GRAPH_UTILS_H_ |
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#define UPDATE_ENGINE_PAYLOAD_GENERATOR_GRAPH_UTILS_H_ |
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#include <vector> |
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#include <base/macros.h> |
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#include "update_engine/payload_generator/graph_types.h" |
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#include "update_engine/update_metadata.pb.h" |
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// A few utility functions for graphs |
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namespace chromeos_update_engine { |
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namespace graph_utils { |
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// Returns the number of blocks represented by all extents in the edge. |
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uint64_t EdgeWeight(const Graph& graph, const Edge& edge); |
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// These add a read-before dependency from graph[src] -> graph[dst]. If the dep |
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// already exists, the block/s is/are added to the existing edge. |
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void AddReadBeforeDep(Vertex* src, |
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Vertex::Index dst, |
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uint64_t block); |
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void AddReadBeforeDepExtents(Vertex* src, |
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Vertex::Index dst, |
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const std::vector<Extent>& extents); |
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void DropWriteBeforeDeps(Vertex::EdgeMap* edge_map); |
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// For each node N in graph, drop all edges N->|index|. |
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void DropIncomingEdgesTo(Graph* graph, Vertex::Index index); |
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void DumpGraph(const Graph& graph); |
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} // namespace graph_utils |
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} // namespace chromeos_update_engine |
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#endif // UPDATE_ENGINE_PAYLOAD_GENERATOR_GRAPH_UTILS_H_
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